Serum factors modulating in vitro migration of thymus lymphocytes.


Migration of guinea pig thymocytes in sealed glass capillaries was measured in 3 intervals during 24 h of incubation. Two factors present in guinea pig sera which stimulated migration were partly characterized. One factor, with a molecular weight between 10,000 and 100,000 (as judged by ultrafiltration), stimulated migration during the first 2 h of… (More)


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